Traditionally, in participatory design (PD) workshops, pens and paper are often used by participants to provide their design ideas. However, using a software tool to gather their feedback can have certain advantages. While some attempts to develop such tools have been undertaken, the basic question whether the tool-based approach is better or worse than its paper-based counterpart in terms of the quality of feedback gathered is rarely explored. We aim to address this research question by conducting three PD workshops with the paper-based and tool-based approach. In addition to the findings about the comparability of the two approaches, one of our main contributions to the future research on this question is the development of the coding scheme CAt+. It enables systematic comparisons of PD data collected with different methods and aims to support designers and developers to exploit PD results.